Audi A6 2.5Tdi excessive white/grey/slight blue smoke, loosing coolant
hi all, i've got a a6 2.5tdi on a 98S plate and i'm regularly topping up the coolant and i'm getting loads of greyish smoke with a tint of blue. the oil levels are ok. It's not all the time, it's mainly when i stop at traffic lights. It's quite bad, i actually leave a cloud of smoke when i pull away at the lights I've bin told its smells of diesel.
The performance is fine and it's probabily even better since i replaced a faulty coolant temp sensor.
The turbo also seems to be running fine, i've done some reading an suggest its a blocked crank breather filter but seems a fiddly job so i'll be tempted to just give it in to a garage however i've had bad experiences with some garages. i just needed some advice on what it could be from fellow Audi owner first.
Any help appreciated thanks